Lathe



1. F. nom.

LAINE;

man Amm. w20.

v Dec.. 19, y192:2@-

l' 9 SHEETS-SHEET l;

u SEEEEE l 1 venray.

Dec. 19, 1922.

J. F. RUBBIN.

LATHE.`

man AUG. 4. 1920.'

9 SHEETS-SHEET 3.

www@ 7mm 1. F. RbBBIN.

Dec. 19, 1922.

LATH E. mzunuc. 4. 1920 9 SHEETS-SHEET -4- 74.5711 all.' l www am Dec. 19, 1922,. 1. F. ROBBIN.

LATHE.

msn AUG.4. |920.

9 SHEETS-SHEET E.

1. F. Rom.

LATHE.

FILED AUGA 1920.

9 SHEETS-SHEET 7.

Dec. 19, 1922.

1,439,125. 1. F. Rom.

LATHE.

FILED Auc.4. |920.

9 SHEETS-SHEET 8.

J. F.1ROBBIN.

LATHE.

FILED AuG.4. |920.

9 SHEETS-SHEET 9.

a. a ad .m

Patented Dee. i9, i922.

arms

Josnrir r. Renningen GRAN-D marins; iviioiiieaiv.

-iippiicationiuea August 4, 1920. serial N. 401,093.

is, generally, to provide a lathe improved in various respects Vhereinafter appearing; and more particularly, Ito provide a lathe for turning `irregular bodies7 having a tool carrier so mountedas to readily move the tool into cutting engagement with the Workpiece; and further, to provide a lathe lot that character havingsuch a carrier for a plurality ot tools and so mounted as to move the tools uniformly into cutting en-` gagement with the respective Work pieces; and further, to provide such a lathe having a tool carrier and` a tool so carried thereby as to be automatically moved nearer theV Work in one position of the mechanism than in a preceding position; and further7 to provide a lathe of that character having improved means for reciprocating the lathe bed on the trainey of the machine; and" further, toprovide such a lathe having improved means torrotating the tool; and further, toprovide a lathe having improved means for interrelatively `moving the live` andthe dead head stocks; `and 'furtlier,to i provide improved work-holdingr means flier@ the live head stock of a lathe; andy iliuiftliei,`

to provide a lathe having a plurality ot pairs ot cooperating head stoclslso arranged as to receive and hold they Work-pieces; in. the saine angular position in all the llive head stocks; and further, to provide a lathe for turning irregular bodies, having im` proved counterbalaneing means for the cai'- rier ofthe tools.

`These and any` other objects hereinafter i appearing are attained by,` land the invention :[inds preferable embodiment in, the structure or structures particularly described in ythe body of this specication and illustrated bythe accompanying` drawings,A

Figure 1 'is a richt hand sideview ot lathe; 4 A n g Figure Q is a transverse seetional vieni oil the saine taken on avertical plane responding to line 2-2 ot .Figure l;

(parts ot the lathe taken on a vertical fcorrespondingto line 177-417 otFigure i6;

`weii'iiig and holding a 'Wordt-piece on the Figure 3 is ja like `view ot certain parts of the lathe taken" on a vertical plane corresponding to line 3 3 of Figure l;` 4

Figurejiis a longitudinal sectionalv View; of the lathe taken `ona horizontalfiplane corresponding to line t-e'vot Figure l;

Figure 5 is alike viev'oil certainparts taken on a horizontal yplane corresponding to line 5,-5 of F igure l, and showing in tools areyjournalledg Y i F iguren is a sectional view ot `part of the lathe takenionla vertical plane corresponding to line 6-6 `of Figure 1;" i Figure 7 is arear View ofthe lathe;

Figure 8 is a sectional :vieW'ot certain p y plane corresponding to line Sl-S ot Figure `a; Figure Slis a longitudinal sectional view of a means forsupporting and moving the plan view the carrier von ivhich the rotary yWorlrfpatterii on the tool carrier, taken on Ia vertical plane corresponding to line 9--9 ofrFigiire l0; Y

Figure l() is atop plan :vien7 of the same; Figure 1l is a longitudinal sectional viewk or" alinodified` form of such means takenfon a vertical plane corresponding to line -liwel'i oi Figure l2; l

Figure l2 kisa top plan View ot the saine; 85 r`Figure 13 is `a vievvoit another inodiiied forni ot such means, certain parts being i shoivn in vertical section taken on a plane corresponding to line 1 3-13 of Figure i4;y Figure 14j: is a top planlvieiv of the saine; g Figure l5 is a vien7 of gearing for rotating the liveiheadvstoclrs ottlielatlie., the shutting being sectioned on a vertical planer 'cori'espoiiding 'to line 'l5-15 `et Figure jill;

`Figure Vllfis a longitudinal axilfi'llysec- 95 tical plane;v i ,Y l f figured? isa transverse vsectional view otfV a` portion thereof taken on a verticalplane tional View 'el' driving nieanstali'en on a verkrigure 18 is a top'plan view of means for controlling the reciprocating movement of thelath bed;

Figure`l9 is a "likeyieiv of parts otthef'v" i" same, ,showing `such parts in another p'OS *105i tion; y f l Figure 2G is a transverse sectional view of parts of said means talre'n on a plane correspending to line 2O of Figure 18 i `Figure 2l is a iront view of means tor relathes live head stock;

Figure 22 is Lt-longitudinal sectionalview of the saine taken on a 'plane corresponding to` line 22-22 of Figure 21;

n Figures 23 and 24 are likeviews but showy ing, respectively, modified constructions of `said means.;

Figure is a facevievv of a tool-carrying rotatable head and Figures 26, 27 and 28 are sectional views of the saine taken vron' planes corresponding `to lines 26-26, 27-2'7 and 23423, respectively of Figure 25, 1 v

i "ln the embodiment ofthe invention chosen for illustration bythe drawingsand for detailed description in the body of this specificatioina `lathe 'for simultaneoiisly turning a lAplurality of irregular; bodies, `as the vork pieces 1,is shovvn. kThe main frame Qfjof the machine has horizontal tracks 3 at'its| oppo-v sitesides respectively, in which; tracks the lathe bed, designated generally 1,'hasareciprocating movement, being'thusmoved by i' y,means hereinafter described'. This lathe bed comprises a portion 5,0n'ivhich the live head 'A stocks 6' of the'ilathe arenjournalled, and another portion 7 carrying rthe jdeadlvhead 'stocks "3 and' beingslidably movable inthe tracks 94 relatively tov the body portion 5 in the direction of thefhead stocks ares, in orderto permit the insertion and'reinoval of Work-pieces between "the-live and dea-d head stocks andto adjust their position to 'Work-pieces .of different lengths; "The cen- `tral live head stock and the central dead head stock hold the `vvork pattern l() lon is carried bya carrierl pivoted at 1-5 adjacentl its rear end to the frame 91. Thiscarrier 111-. carries the cutting tools lrotatably mounted thereon at 17.` lt `willbe seen that i linasmuchas the' carrier is pivotally Amounted instead of being guided inslide beariiigsfit isinuch more'readily movable toward and awayv froinlthe Workpieces under-,the vgoverning action of the follower,

not being subject .to the sticking orbinding where the sides `of such" a bearing' are'` far apart relatively to the length.of the guided and guiding parts ofv the bearing,A tfwill also be seen that inasmuch as lthe aXiso'f the carriers ypivotal mounting 15 intersects the axes of the shafts 18 of the tools, there 1s i slightrvariation (or none Whatever) in the stress or' strainfto, `which the tools driving means-#as their belts 19, carried by the shafts" pulleys QO-aresubjected in anypositiouof `the carriern f The lathe hed' isfi'eciprocated transversely to thecutting path of 4 the Vrotating tools. morder to move'thevvorkeffects the rotation o i pieces,longitudinally through the zone of the tools action, by the following mechanism: The shaftsk 21 journalled. at 22 on the opposite sides of the frame 2 are threaded in the ynuts 23 carried by the lathe bed. By providing this pair of shafts-one at either side of the machine-it will be seen that the lathe bed` is moved in the tracks 3l with uniform speed at bothk its sides and isthus prevented yfrom sticking or binding in its travel.

ln the illustrated construction, l these threaded shafts 21 are rotatedin one direction or the other to move the lathe bed forwardly or rearwardly, from the'same source [of power and by the saine moving part' that f the cuttingtools, viz.,

the kmain Ashaft 24 Vcarrying'the pulleys 25 on which and on the pulleys 2O are carried :the belts 19. This mainshaft Q4.- carries also the pulley 26, a belt 27 being 4carried `thereby and by the pulley 28' Whose shaft 29 has a Worm 30 meshingi'vith the Worm Wheel 31'011 the shaft 32 carrying gears 33, 34, `one of qvhich', 33,;v meshes with a Agear 35 `and the other, 34, meshes with an lintermediate gear 36 Which meshes with a gear 3T on the same shaft `38 which carries the gear These two gears 35, 37 turn freely on their shaft 38 f and have clutch members 39, t0 respectively.

The clutch member Ll1 in splinedrelation to saidlshaft 3,8 `may be slid into clutching engagement With either of the 'clutch members 39 or 10, and when' in engagement Withone of them ther shaft 38 is caused to `rotate in f one `direction but when in engagement with the other this shaft is caused to rotate in the `opposite direction. Said Y shaft l38 has icoV sprocket Wheels 42, t3 on whichfand on the sprocket *Wheels 14, `l5 are carried the lsprocket chains 46, 1'? for rotating the threaded lshafts 21 on which the sprocketk Wheels 411 L15 are respectively` carried.

`lutchinembers of any suitable forniA may be'employed, toothed clutch members beingl preferably in lathes turning heavy work.

,-"lhe nirwable clutchfm'ember 4:1 is auto inatically slid on its shaft 38 into one or the `other lof its operative positions by its fork 48 to which is attached the rod 419 pivoted at '50 to alever arm 51 fulcrumed at 52 on the n v fframe 2. action incident to slide bearings, especially rear face of the lug engages the front pressure of 'its spring "TO, whereupon the face `oiA the lug G7' thusholding the parts in forward position wherein the lever 5l has shifted the rod 4A19 'forwardly causing` the clutch `member 41 to engage the clutch member Z39-to` move the lathe bed rearwardly, the `spring 63 attached to the lever,

the lever 5l and rods e9, 56 rearwardlv thus causing the clutch rmember All to engage the clutch member 4l() to `more the lathe bed forwardly; the same movement causes `the lug 55 to engage the lug 152 of theoatch 53, pivoted at 54 ont-he franie,and therelupon engage the opposite side `et the lug 152 as seen inv Figure 19, wherebytlie `parte are held in that position in which the lathe bed is moved forwardly.' its the lathe bed nears the limit of its forward movement, the releasing member 58 carried thereby engages the collar 59 slidableon the rod 56 and thereby tensions the spring GU, aiidcontinuing'inits movement engagesthe bevelled edge 6l of the catch 58 and `swings it to release the lug 55, whereupon' the spring 4(50 overcomes the vweaker spring` G8 `and swingsthe lever 51 Iforwardly. i j

ln order that the `work-pieces may be out to a certain *degree during the lathe beds travel in one direction'and to an increased degree during its travel in theopposite direction, means yare provided'for moving the followerll relatively to vthe carrierlet in a direction transverse tothe head stocks7 axis, suchr means beingautomatically opera-l ble at a position olf `the lathe bed adjacentthe end ojf its movement. Several terms et such means areshown .in Figure 8, in Fig- 'lires 9 and 10, in Figures `l1 and l2, aujl in llfigures i3 and 14 respectively,` ln Figures 9 and 10. the iiollowerinchiding its mounting member 'i3 `is vertically slidably mounted at 8G on the rarrier .let inthe fob lowing manner: The body portion 72 et the tellowers mounting member carries an? other portion 73` thereof, in vertically adjustable relation, by thebolts Fil passing through vertical slots 75 in the portion 73 andv threaded Ain the other `portion *72, a screw 76 serving to nicely adjust/the position oi the portions 72 and `73 before the clamping bolts 74' are screwed down. The

portion 72 of the mounting member ol- 'the ifollower is raisedA relatively to the carrier b v turning;` the cam head 7T a iew degrees whereby its 'cams 78 are caused to rideup on the rains 79 of the stationarj7 cam head 8() carried by the rcarrier 141-.' The (familie-ad 7?' is thus `turned to raisethe Jfollower 'by carried by rot the follower. 90, `901 are turned bythe levers 841, SLP rethe lug'Sl (see Figure 8) on the lathe bed `Which lugisoai-ried, by the lathe bedwheu approaching `the limit oiits rearward movement, into engagement with `the lever S2 fulcrumed on the carrier, the 'connecting rod 83 thus swinging the lever Sl- 'lulcrumed on the carrier and causing its upper `portion 85, ipivoted at A88` eccentrically on the icamhead 77, to `turn this cam rhead and raise the follower. When the lathe bed ap# "preaches the limit of its forward movement,

itsy lug wengages the levei'lSLl and "moves it'toturn' the cani head 717 in the otherfdi.-

rection,` thus lowerine` the follower.` lt will be seen that in the forward movement oit eut the lathe bedy the welll-pieces are deeperthan in its rearward movement,

ln Figures iland 12 the mounting member 131` ot the follower is vertically `moved byr a. turnable member, the lever arm 90 lul- :crumed on `the carrier and having a cam 91engaging inagrooif'e 92 in the mounting` member oiI the follower to raise yand lower the rsame ,and in Figures 13 and llthe turnable vmember 901 is journalled on the carrier and threadedin theniountingmember 132 These turnable members spectively, operated in the same manner as is the lever particularly shown in Figure i 8. ln Figures ll and l2and in Figures 13 andlll means for adjusting the extent of the` followers movement .relatively to the carrier are shown, comprising@J s101593 eX` tending longitudinally in the" turnable meinbers leveriarm 9% i which slot the pivotal connection 95 of the rod 96 maybe adjustably fixed. rlhe sha-it 32 is in splinedrela tion to means'carried by the lathe bed for rotating the live head stocks. Such means 1n the construction shown in Figures 15 and vlG comprises the gear 97 splined on `the shaft v32 and meshing withv the lgear. 9S `which meshes withllthe gears 99,*100, meshing respectivelyf with the lOl. m2.' 'l'Y ie gears 985 10i, '02 mesh with the gears fl iO/land 105 respectivelyou the ser:V a head stocks. `The like gear ,atios between `gears driving 'the severalv live head stocks being provided, all the live head stocks rotate at the saine speed, and each lmav carrv vwork-holding meansor chucks in' which the Work-pattern and all `the work-pieces held inthe sameangular position; ln order that@1 e work-pa tern and the workpieces to beconliormed thereto by the turning process may all be received and held by 'the live head stocks (rotating at `the saine speed) in,V the same lpredetermined angular positions relatively` to the live head stocks whereby 'tl piece hold are respectively carried, wort:-A ig means are proifided for the live head stocks1 disposed thereon inthe saine angular Aposition about the live head R 7 i .v i i stocfs axes.

lire' 'In Figures 21, 22, 23 and 24 such workyholding means l comprises oppositely disrposed members 106, 107 and like members 108, 109, the squared ends of a work-pattern or of a work-piece being received therebetween. These members are detachably secured to the live; head stock by lbolts 110.y vIn Figure24 the oppositely disposed mem-v bers 108,109 and'also 106, 107 '(not'shown) have inwardly'extendingribs 131; and in Figure 23 such members ,have rabbets 132,'

so thatwork-pieces of differentl cross sectionaldimensions may be received and held thereby. The head stock has alsol fthe central pointed spur A111 and radially extending-spurs 112 adapted to v'be forced into the end ofthe work-pattern or work-piece.

I rEhe two portions and7 ofthe lathe bed are movablel toward and away from each other bythe shafts 113, 114, one at either side of the middle head stocksas shown in Figure 4, which shafts are j ournalled inthe portion 7 and threaded in nuts 115 on the portion 5.` These shafts are turned simultaneously and at the same speed by the crank 116 (see Figure 3) whose shaft has I cause the"v follower 11 to rest -by gravity lsource of power.

only` heavily enough 'on the rotating work- `pattern 10to effect the desired'operation, by

the'weight 121 `to which are attached the c'o'rd's 122, 123 which pass over mutually adjacent portions of the members. 124, 125 respectively, turnably mounted at 126, 127.

on the fraule 2, and thence to points of attachment 128', 129 on the carrier adjacent its sides. By this means thel sides .of the carrier are equally Well supported., and by a single weight. (See Figure 6.)

The dead head stocks-i maybe severally i.

moved toward andv away from their cooperating live head stocks by the usual threaded ineans'turnable bythe hand4 wheels 180.

VIt `will be notedthat all the moving parts of the machine jare driven from y a Asingle `In Figures 25, 26, 27 and 28 a rotatable tool-carrying head 135 `adapted to be used in my lathe is shown. This head has .slots 136 vtherethrough extending' from the .heads nerioherv inwardly and has also` recesses .nu in its face disposed parallelly to the slots. .The tools 13S have portions 139 slidr able in the slots and portions 140 angularly disposed to `theportions 139, said portions '1,40 being slidablexin the recesses.. Thebolts 141 passing through slots 142 in thev tools serve to clamp the same on` thehead inV their desired adjusted position in they slots and recesses. y j

`The inventionbeing intended to be pointed out 'in the claims, is not toibe limited to vor by details of 'constructionofthe particular-embodiment thereof Villustrated by the drawings or hereinbefore described. `Iclaim: m 1; In a lathe of the character described; a frame; a lathe bed. carryinghead stocks and having a reciprocating movement onvthe frame in the head stocks axial direction, a

Acarrier mounted on the frame and having a movement in a direction transverse to the axis ofL the head stocks and carrying al rotatabletooland a follower; means for moving the follower `relatively to the carrier in a direction transverse lto `the head stocks" axis `and,automatically operable at a position of the lathe bed adjacent theend of its movement. .f l

frame; a lathebed carrying head stocks` and having a reciprocatingl movement on the frame in the head stocksaxial direction; a carrier mounted on `the frame and having a movement in a direction transverse to the axis of the head stocks and carrying a rotatable tool and a follower; rmeans formoving the follower relatively to the carrier in a direction transverse to the head stocks axis and automatically operable ata position of the lathe bed adjacent the end of its movement; means for adjustingvthe extent of said movement of the follower. v

3. In a lathe of the characterr described; a frame; al lathe bed carrying head stocks and having a reciprocating vmovement on the frame vin the head stocks VVaxialdirection., carrier mounted on.V the frame and i having ar movement in afdirection transverse to theaxisof thehe'ad stocks and carry/*ing a rotatable tool; afollower n'xovable on the 2. .In alathe of the character described; a

carrier in a direction transverse to the head stocks" axis; turnable. member on the carrier-.engaging the follower' for thus movingv .the same; means for `turning said member,

automatically operable ata, position of the f vlathe bed adjacent theend .of its movement.

4L In a latheof the character described; a frame; a lathe'bed carrying head stocks and havingv a `reciprocating movement von theV frame in the head stocks axial direction; a carriermounted on the frame and having a ymovementin a' direction transverse to the axis of the head stocks and carrying aro'- rtatable tool; afollower movable. on the carrier in a` direction transverse to the head stocks axis; a turnable member on the carrier screw-threadedin the follower for thus moving the same; .means for turning. said member, automatically operable at a post tion ot the lathe bed adjacent the end of its movement. y

5. n a lathe of the character described; a frame; a lathe bed carrying a plurality of pairs ot'vcooperatling head stocks, and having a reciprocating movement on the frame in. the head stocks axial direction; a carrier mounted on the frame and having a move-` ment in a direction transverse to the axes of the head stocks, and carrying` a follower and rotatable tools ior cutting Work pieces held byV cooperating pairs respectively of the head stocks; means for simultaneously moving` interrelatively and holding the dead head stocks and the live head stocks at a desired axial distance apart.

6. fina lathe of the oharaoter described; e frame; a lathe bedhaving,- a reoiynocatingn movement on the frame in the head stocks axial direction and comprising` a body portion carrying one of the head stocks; a por'- tion of the lathe bed movable on said body portion in said direction7 and carrying the other head stock; rotatable shafts, on opposite sides of the head stocks axis, and journalled'in one portion of the lathe bed and screivthreaded in its other portion, for interrelatively moving and holding the head stocks in desired axial distance apart.`

ln testimony whereof l have hereunto set my hand at Grand Rapids, Michigan, this 28th day of July, 1920.

JOSEPH F. ROBBIN. 

